Maguire Products Weigh Scale Blender WSB, Operation & Maintenance Manual

Page: 83 / 99

M A G U I R E P R O D U C T S , I N C .
Edition: August 5, 2014
83
W E I G H S C A L E B L E N D E R
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BLENDER PREVENTIVE MAINTENANCE
There are no components of your blender that require periodic maintenance. However, over the years,
blenders may be subjected to abuse or difficult conditions, and accuracy can suffer. To maintain control
over the cost of expensive color and additives, you must maintain accuracy. We recommend that blenders
be examined once a year, and all necessary repairs be made to insure continued accuracy.
DISPENSE GATES
To be accurate, gates must open and close freely, quickly, and completely. Check for wear on the
slide gate guide rods. Check cylinder clevis adjustment for correct closing of the gate. A gate should
close just enough to block the hole, but no further. It is best if they do not pass over the far edge of the
opening as this might catch and jam on a pellet. Check that the clevis pin connecting the air cylinder is
intact, not broken or worn through. Check for correct air pressure, tight fittings, and no damaged or
crimped air lines.
WEIGH BINS
Check for smooth correct operation of the dump flap. Hinge points should not be worn. Gate should
overlap the forward edge enough to prevent dribble when closed, even when closed against pellets.
Space at the rear of the flap should allow for static build up of pellets on the rear edge of the dump flap
without interfering with the closing of the flap. Again, if you see evidence of these problems, newer
design parts are available to solve these problems. Check that the flap closes fully, and closes softly.
The soft close is adjustable.
CLEARANCES - FREE MOVEMENT OF WEIGH BIN
Carefully examine all the parts of the weigh bin and the bin hanging bracket to be sure that nothing
touches any fixed parts. A quarter (1/4) inch of space should exist on all sides of the weigh bin. Over
the years, windows and guards have been added, and this has required that the weigh bin size be
reduced to maintain 1/4 inch clearance per side. Be sure you do not have an older larger bin installed
where windows have been added.
A light touch of the bin should show a change in the weight readout. Remove the touch and the display
should return to exactly the same number, plus or minus 1 or 1/10 gram depending on model. Only
the last digit should drift, or vary, and by no more then one count. If ANY interference is detected, it
MUST be fixed.
MIX CHAMBER
No bent blades. No SHARP blades. Bent blades might brake off and severally damage your process
screw. Sharp blades are a safety hazard. Replace if mix blades are not perfect.
The blade assembly should slip on and off the motor shaft easily. The need to use excessive force to
remove the mixer assembly may bend the blades and they may eventually break off. Correct this if it is
a problem.
PRINT DIAGNOSTICS, PRINT PARAMETERS PRINTOUTS
After you have fixed any problems, use the Print Diagnostics and Print Parameters print options to
obtain printouts and fax or email them to us for evaluation.